Salt Lake City, Utah Revisions
MILEPOST 1362
Salt Lake City's forecast for Wednesday has moved 16°F colder
66°F in the 20261010T06:00Z run, 49°F in the 20261012T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 26°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Wednesday, October 21 at 18Z in Salt Lake City, that trail runs from 65.7°F in the 20261010T06:00Z cycle to 49.3°F in the 20261012T00:00Z — a move of -16.3°F across 8 runs.
The change is about half the run's 10th-to-90th percentile spread, so the earlier forecast is still inside the current range of outcomes.
Model NBM-QMD, via api.weather.city /v1/history. Percentiles are the same run's own.
The numbers in this piece, with what they are measured against
| forecast revision for Wednesday at 18Z api.weather.city /v1/history (nbm-qmd) |
-16.3 °F | normal 0.0 °F · 1 of 11 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
25.7 °F | normal 16.3 °F current run |
- Milepost
- 1362 · laid 2026-10-12T10:25:16Z
- Model
- nbm-qmd · cycle 20261012T00:00Z
- Desk
- revision v1
- Method
- the same valid time read from successive synoptic cycles; the move is last run minus first run
- Source
- https://api.weather.city/v1/history
- Digest
- 592b99b92e0b54774e3cc46765faed4581e04c895f5441086c363637aa057f8e
- Machine
- JSON